1
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Hubert C, Chomette C, Désert A, Madeira A, Perro A, Florea I, Ihiawakrim D, Ersen O, Lombardi A, Pertreux E, Vialla F, Maioli P, Crut A, Del Fatti N, Vallée F, Majimel J, Ravaine S, Duguet E, Tréguer-Delapierre M. Versatile template-directed synthesis of gold nanocages with a predefined number of windows. NANOSCALE HORIZONS 2021; 6:311-318. [PMID: 33439184 DOI: 10.1039/d0nh00620c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Highly symmetrical gold nanocages can be produced with a controllable number of circular windows of either 2, 3, 4, 6 or 12 via an original fabrication route. The synthetic pathway includes three main stages: the synthesis of silica/polystyrene multipod templates, the regioselective seeded growth of a gold shell on the unmasked part of the silica surface and the development of gold nanocages by dissolving/etching the templates. Electron microscopy and tomography provide evidence of the symmetrical features of the as-obtained nanostructures. The optical properties of nanocages with 4 and 12 windows were measured at the single particle level by spatial modulation spectroscopy and correlated with numerical simulations based on finite-element modeling. The new multi-step synthesis approach reported here also allows the synthesis of rattle-like nanostructures through filling of the nanocages with a guest nano-object. With the potential to adjust the chemical composition, size and geometry of both the guest particle and the host cage, it opens new routes towards the fabrication of hollow nanostructures of high interest for a variety of applications including sensing devices, catalytic reactors and biomedicine.
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Affiliation(s)
- Céline Hubert
- Univ. Bordeaux, CNRS, ICMCB, UMR 5026, Pessac 33600, France.
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2
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On the ligand exchange, redox, and disproportionation processes of tetrachloroaurate in the presence of a pyridine derivative. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.137213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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3
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Pushpavanam K, Inamdar S, Dutta S, Bista T, Sokolowski T, Sapareto S, Rege K. Plasmonic gel nanocomposites for detection of high energy electrons. J Mater Chem B 2020; 8:4930-4939. [PMID: 32281998 DOI: 10.1039/d0tb00241k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Radiation therapy is a common treatment modality employed in the treatment of cancer. High energy photons are the primary source of radiation but when administered, they leave an exit dose resulting in radiation damage to the adjacent healthy tissues. To overcome this, high energy electrons are employed in cases of skin cancer to minimize radiation induced toxicity. Despite these advances, measurement of delivered radiation remains a challenge due to limitations with existing dosimeters including labor intensive fabrication, complex read-out techniques and post-irradiation instability. To overcome these limitations, we have developed a novel colorimetric plasmonic gel nanocomposite for the detection of therapeutic levels of radiation delivered in electron beam therapy. The plasmonic nanocomposite consists of an agarose gel matrix encapsulating precursor gold ions, which are reduced to gold nanoparticles as a result of exposure to high energy electrons. The formation of gold nanoparticles renders a change in color to the agarose matrix, resulting in the formation of plasmonic gel nanocomposites. The intensity of the color formed exhibits a linear relation with the delivered electron dose, which can be quantified using absorbance spectroscopy. The plasmonic gel nanocomposites were able to detect doses employed in fractionated electron therapy, including in an anthropomorphic phantom used for planning radiation treatments in the clinic. Furthermore, the use of glutathione as a quenching agent facilitated qualitative and quantitative spatial mapping of the delivered dose. Our results indicate that the ease of fabrication, simplicity of detection and quantification using absorbance spectroscopy, determination of spatial dose profiles, and relatively low cost make the plasmonic gel nanocomposite technology attractive for detecting electron doses in the clinic.
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Affiliation(s)
- Karthik Pushpavanam
- Chemical Engineering, Arizona State University, 501 E. Tyler Mall, ECG 303, Tempe, AZ 85287-6106 85287, USA.
| | - Sahil Inamdar
- Chemical Engineering, Arizona State University, 501 E. Tyler Mall, ECG 303, Tempe, AZ 85287-6106 85287, USA.
| | - Subhadeep Dutta
- School of Molecular Sciences, Arizona State University, Tempe, AZ 85287, USA
| | - Tomasz Bista
- Banner-MD Anderson Cancer Center, Gilbert, AZ 85234, USA
| | | | | | - Kaushal Rege
- Chemical Engineering, Arizona State University, 501 E. Tyler Mall, ECG 303, Tempe, AZ 85287-6106 85287, USA.
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4
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El-Seedi HR, El-Shabasy RM, Khalifa SAM, Saeed A, Shah A, Shah R, Iftikhar FJ, Abdel-Daim MM, Omri A, Hajrahand NH, Sabir JSM, Zou X, Halabi MF, Sarhan W, Guo W. Metal nanoparticles fabricated by green chemistry using natural extracts: biosynthesis, mechanisms, and applications. RSC Adv 2019; 9:24539-24559. [PMID: 35527869 PMCID: PMC9069627 DOI: 10.1039/c9ra02225b] [Citation(s) in RCA: 154] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 07/05/2019] [Indexed: 12/19/2022] Open
Abstract
Nanoparticles (NPs) are new inspiring clinical targets that have emerged from persistent efforts with unique properties and diverse applications. However, the main methods currently utilized in their production are not environmentally friendly. With the aim of promoting a green approach for the synthesis of NPs, this review describes eco-friendly methods for the preparation of biogenic NPs and the known mechanisms for their biosynthesis. Natural plant extracts contain many different secondary metabolites and biomolecules, including flavonoids, alkaloids, terpenoids, phenolic compounds and enzymes. Secondary metabolites can enable the reduction of metal ions to NPs in eco-friendly one-step synthetic processes. Moreover, the green synthesis of NPs using plant extracts often obviates the need for stabilizing and capping agents and yields biologically active shape- and size-dependent products. Herein, we review the formation of metallic NPs induced by natural extracts and list the plant extracts used in the synthesis of NPs. In addition, the use of bacterial and fungal extracts in the synthesis of NPs is highlighted, and the parameters that influence the rate of particle production, size, and morphology are discussed. Finally, the importance and uniqueness of NP-based products are illustrated, and their commercial applications in various fields are briefly featured.
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Affiliation(s)
- Hesham R El-Seedi
- Pharmacognosy Group, Department of Medicinal Chemistry, Uppsala University, Biomedical Centre Box 574 SE-751 23 Uppsala Sweden +46 18 4714207
- College of Food and Biological Engineering, Jiangsu University Zhenjiang 212013 China
- Al-Rayan Research and Innovation Center, Al-Rayan Colleges Medina 42541 Saudi Arabia
- Department of Chemistry, Faculty of Science, Menoufia University Egypt
| | - Rehan M El-Shabasy
- Department of Chemistry, Faculty of Science, Menoufia University Egypt
- Ecological Chemistry Group, Department of Chemistry, School of Chemical Science and Engineering, KTH Royal Institute of Technology Stockholm Sweden
| | - Shaden A M Khalifa
- Clinical Research Centre, Karolinska University Hospital Huddinge Sweden
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University SE 106 91 Stockholm Sweden
| | - Aamer Saeed
- Department of Chemistry, Quaid-i-Azam University 45320 Islamabad Pakistan
| | - Afzal Shah
- Department of Chemistry, College of Science, University of Bahrain Sakhir 32038 Bahrain
| | - Raza Shah
- H.E.J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi Karachi-75270 Pakistan
| | - Faiza Jan Iftikhar
- Department of Chemistry, Quaid-i-Azam University 45320 Islamabad Pakistan
| | - Mohamed M Abdel-Daim
- Pharmacology Department, Faculty of Veterinary Medicine, Suez Canal University Ismailia 41522 Egypt
| | - Abdelfatteh Omri
- Center of Excellence in Bionoscience Research, King Abdulaziz University (KAU) Jeddah 21589 Saudi Arabia
- Biotechnology Research Group, Department of Biological Sciences, Faculty of Science, King Abdulaziz University (KAU) Jeddah 21589 Saudi Arabia
| | - Nahid H Hajrahand
- Center of Excellence in Bionoscience Research, King Abdulaziz University (KAU) Jeddah 21589 Saudi Arabia
- Biotechnology Research Group, Department of Biological Sciences, Faculty of Science, King Abdulaziz University (KAU) Jeddah 21589 Saudi Arabia
| | - Jamal S M Sabir
- Center of Excellence in Bionoscience Research, King Abdulaziz University (KAU) Jeddah 21589 Saudi Arabia
- Biotechnology Research Group, Department of Biological Sciences, Faculty of Science, King Abdulaziz University (KAU) Jeddah 21589 Saudi Arabia
| | - Xiaobo Zou
- College of Food and Biological Engineering, Jiangsu University Zhenjiang 212013 China
| | - Mohammed F Halabi
- Al-Rayan Research and Innovation Center, Al-Rayan Colleges Medina 42541 Saudi Arabia
| | | | - Weisheng Guo
- Translational Medicine Center, The Second Affiliated Hospital, Guangzhou Medical University Guangzhou 510260 China +86-020-34153830
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5
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Fodjo EK, Canlier A, Kong C, Yurtsever A, Guillaume PLA, Patrice FT, Abe M, Tohei T, Sakai A. Facile Synthesis Route of Au-Ag Nanostructures Soaked in PEG. ACTA ACUST UNITED AC 2018. [DOI: 10.4236/anp.2018.72004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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6
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Kirichkov MV, Guda AA, Budnyk AP, Lastovina TA, Bugaev AL, Shapovalov VV, Rusalev YV, Chernyshev AV, Soldatov AV. In situ analysis of the formation steps of gold nanoparticles by oleylamine reduction. J STRUCT CHEM+ 2017. [DOI: 10.1134/s0022476617070186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Affiliation(s)
- Xiuxiu Yin
- Ben-Gurion University of the Negev; Department of Chemistry; Beer Sheva 84105 Israel
| | - Nagappa L. Teradal
- Ben-Gurion University of the Negev; Department of Chemistry; Beer Sheva 84105 Israel
| | - Ahiud Morag
- Ben-Gurion University of the Negev; Department of Chemistry; Beer Sheva 84105 Israel
- Ilse Katz Institute for Nanotechnology; Ben-Gurion University of the Negev; Beer Sheva 84105 Israel
| | - Raz Jelinek
- Ben-Gurion University of the Negev; Department of Chemistry; Beer Sheva 84105 Israel
- Ilse Katz Institute for Nanotechnology; Ben-Gurion University of the Negev; Beer Sheva 84105 Israel
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8
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Yuan Z, Du Y, He Y. Hyperbranched polyamine assisted synthesis of dual-luminescent gold composite with pH responsive character. Methods Appl Fluoresc 2017; 5:014011. [DOI: 10.1088/2050-6120/aa625d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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9
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Wei X, Fan Q, Liu H, Bai Y, Zhang L, Zheng H, Yin Y, Gao C. Holey Au-Ag alloy nanoplates with built-in hotspots for surface-enhanced Raman scattering. NANOSCALE 2016; 8:15689-15695. [PMID: 27524663 DOI: 10.1039/c6nr04866h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Plasmonic noble metal nanocrystals with interior nanogaps have attracted great attention in surface-enhanced Raman scattering (SERS) applications due to the presence of built-in hotspots. Herein, we report a synthesis route to holey Au-Ag alloy nanoplates by controlled galvanic replacement with Ag nanoplates as the sacrificial template, a sulfite-coordinated Au(i) salt as the Au source, and polyvinylpyrrolidone (PVP) as the capping agent. PVP helps regulate the anisotropic growth of nanopores on the Ag nanoplates to afford a highly holey nanostructure, and the monovalent Au(i) salt plays a critical role in stabilizing these holey nanoplates by rapidly enriching Au in the alloy nanostructures. Numerical simulations and experimental results suggest that these holey Au-Ag alloy nanoplates possess enormous internal hotspots for high sensitivity in the SERS analysis, and high stability for excellent reliability of the analysis under many harsh conditions. We believe that this strategy is potentially applicable to the synthesis of many other types of plasmonic nanostructures with inherent nanogaps for many sensing and imaging applications.
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Affiliation(s)
- Xinyu Wei
- Center for Materials Chemistry, Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi 710054, China.
| | - Qikui Fan
- Center for Materials Chemistry, Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi 710054, China.
| | - Hongpo Liu
- Center for Materials Chemistry, Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi 710054, China.
| | - Yaocai Bai
- Department of Chemistry, University of California, Riverside, California 92521, USA
| | - Lei Zhang
- Center for Materials Chemistry, Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi 710054, China.
| | - Haoquan Zheng
- Department of Materials and Environmental Chemistry, Stockholm University, Stockholm 10691, Sweden
| | - Yadong Yin
- Department of Chemistry, University of California, Riverside, California 92521, USA
| | - Chuanbo Gao
- Center for Materials Chemistry, Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi 710054, China.
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10
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Pushpavanam K, Narayanan E, Chang J, Sapareto S, Rege K. A Colorimetric Plasmonic Nanosensor for Dosimetry of Therapeutic Levels of Ionizing Radiation. ACS NANO 2015; 9:11540-11550. [PMID: 26434692 DOI: 10.1021/acsnano.5b05113] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Modern radiation therapy using highly automated linear accelerators is a complex process that maximizes doses to tumors and minimizes incident dose to normal tissues. Dosimeters can help determine the radiation dose delivered to target diseased tissue while minimizing damage to surrounding healthy tissue. However, existing dosimeters can be complex to fabricate, expensive, and cumbersome to operate. Here, we demonstrate studies of a liquid phase, visually evaluated plasmonic nanosensor that detects radiation doses commonly employed in fractionated radiotherapy (1-10 Gy) for tumor ablation. We accomplished this by employing ionizing radiation, in concert with templating lipid surfactant micelles, in order to convert colorless salt solutions of univalent gold ions (Au(1)) to maroon-colored dispersions of plasmonic gold nanoparticles. Differences in color intensities of nanoparticle dispersions were employed as quantitative indicators of the radiation dose. The nanoparticles thus formed were characterized using UV-vis absorbance spectroscopy, dynamic light scattering, and transmission electron microscopy. The role of lipid surfactants on nanoparticle formation was investigated by varying the chain lengths while maintaining the same headgroup and counterion; the effect of surfactant concentration on detection efficacy was also investigated. The plasmonic nanosensor was able to detect doses as low as 0.5 Gy and demonstrated a linear detection range of 0.5-2 Gy or 5-37 Gy depending on the concentration of the lipid surfactant employed. The plasmonic nanosensor was also able to detect radiation levels in anthropomorphic prostate phantoms when administered together with endorectal balloons, indicating its potential utility as a dosimeter in fractionated radiotherapy for prostate cancer. Taken together, our results indicate that this simple visible nanosensor has strong potential to be used as a dosimeter for validating delivered radiation doses in fractionated radiotherapies in a variety of clinical settings.
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Affiliation(s)
- Karthik Pushpavanam
- Chemical Engineering, Arizona State University , Tempe, Arizona 85287-6106, United States
| | - Eshwaran Narayanan
- Chemical Engineering, Arizona State University , Tempe, Arizona 85287-6106, United States
| | - John Chang
- Banner-MD Anderson Cancer Center , Gilbert, Arizona 85234, United States
| | - Stephen Sapareto
- Banner-MD Anderson Cancer Center , Gilbert, Arizona 85234, United States
| | - Kaushal Rege
- Chemical Engineering, Arizona State University , Tempe, Arizona 85287-6106, United States
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11
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Wang H, Fang J, Xu J, Wang F, Sun B, He S, Sun G, Liu H. A hanging plasmonic droplet: three-dimensional SERS hotspots for a highly sensitive multiplex detection of amino acids. Analyst 2015; 140:2973-8. [PMID: 25799000 DOI: 10.1039/c5an00232j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
3D hotspots in a hanging plasmonic droplet result in an ultrahigh Raman Scattering for the ultratrace and multiplex identification of amino acids.
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Affiliation(s)
- Hongyan Wang
- Department of Oncology
- The First Affiliated Hospital of Anhui Medical University
- Hefei 230022
- P.R. China
| | - Jinmei Fang
- Department of Oncology
- The First Affiliated Hospital of Anhui Medical University
- Hefei 230022
- P.R. China
| | - Jifei Xu
- Department of Oncology
- The First Affiliated Hospital of Anhui Medical University
- Hefei 230022
- P.R. China
| | - Fan Wang
- Department of Oncology
- The First Affiliated Hospital of Anhui Medical University
- Hefei 230022
- P.R. China
| | - Bai Sun
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei 230031
- P.R. China
| | - Shengnan He
- No. 38 Research Institute of China Electronics
- Technology Group Corporation
- Hefei 230088
- P.R. China
| | - Guoping Sun
- Department of Oncology
- The First Affiliated Hospital of Anhui Medical University
- Hefei 230022
- P.R. China
| | - Honglin Liu
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei 230031
- P.R. China
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12
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Kitching M, Ramani M, Marsili E. Fungal biosynthesis of gold nanoparticles: mechanism and scale up. Microb Biotechnol 2014; 8:904-17. [PMID: 25154648 PMCID: PMC4621444 DOI: 10.1111/1751-7915.12151] [Citation(s) in RCA: 149] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 07/12/2014] [Accepted: 07/17/2014] [Indexed: 11/26/2022] Open
Abstract
Gold nanoparticles (AuNPs) are a widespread research tool because of their oxidation resistance, biocompatibility and stability. Chemical methods for AuNP synthesis often produce toxic residues that raise environmental concern. On the other hand, the biological synthesis of AuNPs in viable microorganisms and their cell-free extracts is an environmentally friendly and low-cost process. In general, fungi tolerate higher metal concentrations than bacteria and secrete abundant extracellular redox proteins to reduce soluble metal ions to their insoluble form and eventually to nanocrystals. Fungi harbour untapped biological diversity and may provide novel metal reductases for metal detoxification and bioreduction. A thorough understanding of the biosynthetic mechanism of AuNPs in fungi is needed to reduce the time of biosynthesis and to scale up the AuNP production process. In this review, we describe the known mechanisms for AuNP biosynthesis in viable fungi and fungal protein extracts and discuss the most suitable bioreactors for industrial AuNP biosynthesis.
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Affiliation(s)
- Michael Kitching
- School of Biotechnology, Dublin City University, Dublin, Dublin 9, Ireland
| | - Meghana Ramani
- Center for Materials science and Nano Devices, Department of Physics, SRM University, Kattankulathur, India
| | - Enrico Marsili
- Marine and Environmental Sensing Technology Hub, Dublin City University, Dublin, Dublin 9, Ireland.,Singapore Centre on Environmental Life Sciences Engineering, Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551, Singapore
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13
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Matsushita T, Fukumoto Y, Kawakami T, Tsuruoka T, Murashima T, Yanagishita T, Masuda H, Nawafune H, Akamatsu K. In situ template synthesis of one-dimensional gold nanoparticle arrays in organic nanowires. RSC Adv 2013. [DOI: 10.1039/c3ra42727g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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14
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Zhu C, Peng HC, Zeng J, Liu J, Gu Z, Xia Y. Facile Synthesis of Gold Wavy Nanowires and Investigation of Their Growth Mechanism. J Am Chem Soc 2012; 134:20234-7. [DOI: 10.1021/ja3091214] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cun Zhu
- The Wallace
H. Coulter Department
of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United
States
- State Key Laboratory
of Bioelectronics,
School of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, P. R. China
| | - Hsin-Chieh Peng
- School of Chemistry and Biochemistry,
School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United
States
| | - Jie Zeng
- Hefei National Laboratory
for
Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei,
Anhui 230026, P. R. China
| | - Jingyue Liu
- Department of Physics, Arizona State University, Tempe, Arizona 85287, United
States
| | - Zhongze Gu
- State Key Laboratory
of Bioelectronics,
School of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, P. R. China
| | - Younan Xia
- The Wallace
H. Coulter Department
of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United
States
- School of Chemistry and Biochemistry,
School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United
States
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15
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Zhou J, Yang Q. Facile Synthesis of Monodisperse Noble-Metal Nanoparticles and High Catalytic Performance for Organic Reactions in Both Water and Oil Systems. Chem Asian J 2012; 7:2045-50. [DOI: 10.1002/asia.201200337] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Revised: 05/12/2012] [Indexed: 11/06/2022]
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16
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Huang CC, Lai WC, Tsai CY, Yang CH, Yeh CS. Reversible synthesis of sub-10 nm spherical and icosahedral gold nanoparticles from a covalent Au(CN)2(-) precursor and recycling of cyanide to form ferric ferrocyanide for cell staining. Chemistry 2012; 18:4107-14. [PMID: 22344979 DOI: 10.1002/chem.201103024] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Indexed: 11/06/2022]
Abstract
A solution approach based on Au(CN)(2)(-) chemistry is reported for the formation of nanoparticles. The covalent character of the Au(CN)(2)(-) precursor was exploited in the formation of sub-10 nm nanospheres (≈2.4 nm) and highly monodisperse icosahedral Au nanoparticles (≈8 nm) at room temperature in a one-pot aqueous synthesis. The respective spherical and icosahedral Au morphologies can be controlled by either the absence or presence of the polymer polyvinylpyrrolidone (PVP). Using Au(CN)(2)(-) as a metal ion source, our findings suggest that the addition of citrate ions is necessary to enhance the particle formation rate as well as to generate a more homogeneous colloidal dispersion. Because of the presence of oxygen and the operation of a CN(-) etching process associated with Au(CN)(2)(-) complex formation, an interesting reversible formation-dissolution process was observed, which allowed us to repeatedly prepare spherical and icosahedral Au nanoparticles. Time-dependent TEM images and UV/Vis spectra were carefully acquired to study the reversibility of this formation-dissolution process. In view of the accompanying generation of toxic cyanide anions, we have developed a protocol to recycle cyanide in the presence of citrate ions through ferric ferrocyanide formation. After completion of particle formation, the residual solutions containing citrate ions and cyanide ions were processed to stain iron oxide nanoparticles endocytosized in cells. Additionally, the as-prepared 8 nm Au icosahedra could be isolated and grown to larger 57 nm-sized icosahedra using the seed-mediated growth approach.
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Affiliation(s)
- Chih-Chia Huang
- Department of Chemistry and Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 701, Taiwan
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17
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Schmidbaur H, Schier A. Aurophilic interactions as a subject of current research: an up-date. Chem Soc Rev 2012; 41:370-412. [DOI: 10.1039/c1cs15182g] [Citation(s) in RCA: 862] [Impact Index Per Article: 71.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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18
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Jiang Z, Zhang Q, Zong C, Liu BJ, Ren B, Xie Z, Zheng L. Cu–Au alloy nanotubes with five-fold twinned structure and their application in surface-enhanced Raman scattering. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm33863g] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Zheng Y, Tao J, Liu H, Zeng J, Yu T, Ma Y, Moran C, Wu L, Zhu Y, Liu J, Xia Y. Facile synthesis of gold nanorice enclosed by high-index facets and its application for CO oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2011; 7:2307-2312. [PMID: 21630441 DOI: 10.1002/smll.201100106] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Indexed: 05/30/2023]
Abstract
A facile method for generating Au nanorice enclosed by high-index facets in high purity. The nanorice shows much higher catalytic activity for CO oxidation than multiply twinned particles of Au enclosed by {111} facets at temperatures below 300 °C.
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Affiliation(s)
- Yiqun Zheng
- Department of Chemistry, Washington University, St. Louis, Missouri 63130, USA
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20
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Martínez-Salvador S, Forniés J, Martín A, Menjón B. [Au(CF3)(CO)]: A Gold Carbonyl Compound Stabilized by a Trifluoromethyl Group. Angew Chem Int Ed Engl 2011; 50:6571-4. [DOI: 10.1002/anie.201101231] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Indexed: 11/09/2022]
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21
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22
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Simple Electrodeposition of Dendritic Au Rods from Sulfite-Based Au(I) Electrolytes with High Electrocatalytic and SERS Activities. ELECTROANAL 2011. [DOI: 10.1002/elan.201000759] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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23
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Seo B, Choi S, Kim J. Simple electrochemical deposition of au nanoplates from au(I) cyanide complexes and their electrocatalytic activities. ACS APPLIED MATERIALS & INTERFACES 2011; 3:441-446. [PMID: 21247074 DOI: 10.1021/am101018g] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Nanostructured Au surfaces have unique and attractive properties as functional materials in many fields such as heterogeneous catalysis and electrocatalysis. Electrochemical deposition of Au has received much attention as a simple route for the fabrication of Au surface nanostructures. In this study, we report a simple electrodeposition of Au nanoplate structures from Au(CN)(2)(-) on Au surfaces in the absence of additives or premodification of electrode surfaces. The shape of the Au nanoplates as well as their surface structures is unique compared to other Au nanostructures electrodeposited from commonly employed AuCl(4)(-) complexes. The nanoplate Au surfaces exhibit unique electrocatalytic activities for oxygen reduction and glucose oxidation, which originate from the Au(110) and Au(100) facets present on nanoplate surfaces. A simple preparation of well-defined Au nanoplate structures would allow new opportunities in various areas utilizing Au-based substrates through further modification of Au surfaces.
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Affiliation(s)
- Bora Seo
- Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk 361-763, Korea
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Katz-Boon H, Rossouw CJ, Weyland M, Funston AM, Mulvaney P, Etheridge J. Three-dimensional morphology and crystallography of gold nanorods. NANO LETTERS 2011; 11:273-278. [PMID: 21182286 DOI: 10.1021/nl103726k] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We determine the three-dimensional shape, to within 1 nm resolution, of single-crystal gold nanorods grown in the presence of silver ions using electron tomography and thickness profile measurements. We find that, contrary to the current literature, the octagonal side-facets are sparsely packed atomic planes all belonging to the same symmetry-equivalent family, {0 5 12}. Furthermore, the rod ends terminate in a pyramid with slightly different facets, and each pyramid is connected to the sides by four small {0 5 12} "bridging" facets.
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Affiliation(s)
- Hadas Katz-Boon
- Department of Materials Engineering and Monash Centre for Electron Microscopy, Monash University, Victoria 3800, Australia
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Zopes D, Kremer S, Scherer H, Belkoura L, Pantenburg I, Tyrra W, Mathur S. Hydrolytic Decomposition of Tetramethylammonium Bis(trifluoromethyl)aurate(I), [NMe4][Au(CF3)2]: A Route for the Synthesis of Gold Nanoparticles in Aqueous Medium. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000863] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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